Examples with DEROctetString com.github.zhenwei.core.asn1.DEROctetString used on opensource projects

Example 91 with DEROctetString

use of com.github.zhenwei.core.asn1.DEROctetString in project PdfBox-Android by TomRoush.

the class PublicKeySecurityHandler method createDERForRecipient.

private ASN1Primitive createDERForRecipient(byte[] in, X509Certificate cert) throws IOException, GeneralSecurityException {
    String algorithm = PKCSObjectIdentifiers.RC2_CBC.getId();
    AlgorithmParameterGenerator apg;
    KeyGenerator keygen;
    Cipher cipher;
    try {
        apg = AlgorithmParameterGenerator.getInstance(algorithm, SecurityProvider.getProvider());
        keygen = KeyGenerator.getInstance(algorithm, SecurityProvider.getProvider());
        cipher = Cipher.getInstance(algorithm, SecurityProvider.getProvider());
    } catch (NoSuchAlgorithmException e) {
        // happens when using the command line app .jar file
        throw new IOException("Could not find a suitable javax.crypto provider for algorithm " + algorithm + "; possible reason: using an unsigned .jar file", e);
    } catch (NoSuchPaddingException e) {
        // should never happen, if this happens throw IOException instead
        throw new RuntimeException("Could not find a suitable javax.crypto provider", e);
    }
    AlgorithmParameters parameters = apg.generateParameters();
    ASN1InputStream input = new ASN1InputStream(parameters.getEncoded("ASN.1"));
    ASN1Primitive object = input.readObject();
    input.close();
    keygen.init(128);
    SecretKey secretkey = keygen.generateKey();
    cipher.init(1, secretkey, parameters);
    byte[] bytes = cipher.doFinal(in);
    KeyTransRecipientInfo recipientInfo = computeRecipientInfo(cert, secretkey.getEncoded());
    DERSet set = new DERSet(new RecipientInfo(recipientInfo));
    AlgorithmIdentifier algorithmId = new AlgorithmIdentifier(new ASN1ObjectIdentifier(algorithm), object);
    EncryptedContentInfo encryptedInfo = new EncryptedContentInfo(PKCSObjectIdentifiers.data, algorithmId, new DEROctetString(bytes));
    EnvelopedData enveloped = new EnvelopedData(null, set, encryptedInfo, (ASN1Set) null);
    ContentInfo contentInfo = new ContentInfo(PKCSObjectIdentifiers.envelopedData, enveloped);
    return contentInfo.toASN1Primitive();
}

Example 92 with DEROctetString

use of com.github.zhenwei.core.asn1.DEROctetString in project PdfBox-Android by TomRoush.

the class PublicKeySecurityHandler method computeRecipientInfo.

private KeyTransRecipientInfo computeRecipientInfo(X509Certificate x509certificate, byte[] abyte0) throws IOException, CertificateEncodingException, InvalidKeyException, BadPaddingException, IllegalBlockSizeException {
    ASN1InputStream input = new ASN1InputStream(x509certificate.getTBSCertificate());
    TBSCertificate certificate = TBSCertificate.getInstance(input.readObject());
    input.close();
    AlgorithmIdentifier algorithmId = certificate.getSubjectPublicKeyInfo().getAlgorithm();
    IssuerAndSerialNumber serial = new IssuerAndSerialNumber(certificate.getIssuer(), certificate.getSerialNumber().getValue());
    Cipher cipher;
    try {
        cipher = Cipher.getInstance(algorithmId.getAlgorithm().getId(), SecurityProvider.getProvider());
    } catch (NoSuchAlgorithmException e) {
        // should never happen, if this happens throw IOException instead
        throw new RuntimeException("Could not find a suitable javax.crypto provider", e);
    } catch (NoSuchPaddingException e) {
        // should never happen, if this happens throw IOException instead
        throw new RuntimeException("Could not find a suitable javax.crypto provider", e);
    }
    cipher.init(1, x509certificate.getPublicKey());
    DEROctetString octets = new DEROctetString(cipher.doFinal(abyte0));
    RecipientIdentifier recipientId = new RecipientIdentifier(serial);
    return new KeyTransRecipientInfo(recipientId, algorithmId, octets);
}

Example 93 with DEROctetString

use of com.github.zhenwei.core.asn1.DEROctetString in project attestation by TokenScript.

the class HelperTest method makeMinimalAtt.

public static Attestation makeMinimalAtt() {
    Attestation att = new Attestation();
    // Our initial version
    att.setVersion(IdentifierAttestation.HIDDEN_IDENTIFIER_VERSION);
    att.setSerialNumber(42);
    // Blank subject info
    att.setSubject("CN=");
    att.setSigningAlgorithm(IdentifierAttestation.DEFAULT_SIGNING_ALGORITHM);
    ASN1EncodableVector dataObject = new ASN1EncodableVector();
    dataObject.add(new DEROctetString("hello world".getBytes()));
    att.setDataObject(new DERSequence(dataObject));
    assertTrue(att.checkValidity());
    return att;
}

Example 94 with DEROctetString

use of com.github.zhenwei.core.asn1.DEROctetString in project attestation by TokenScript.

the class HelperTest method makeMaximalAtt.

public static IdentifierAttestation makeMaximalAtt(AsymmetricKeyParameter key) throws IOException {
    IdentifierAttestation att = new IdentifierAttestation("205521676", "https://www.deviantart.com/some_user", key);
    att.setSerialNumber(42);
    att.setSigningAlgorithm(IdentifierAttestation.DEFAULT_SIGNING_ALGORITHM);
    att.setIssuer("CN=ALX");
    att.setSmartcontracts(Arrays.asList(42L, 1337L));
    ASN1EncodableVector dataObject = new ASN1EncodableVector();
    dataObject.add(new DEROctetString("hello world".getBytes()));
    dataObject.add(new ASN1Integer(42));
    att.setDataObject(new DERSequence(dataObject));
    assertTrue(att.checkValidity());
    return att;
}

Example 95 with DEROctetString

use of com.github.zhenwei.core.asn1.DEROctetString in project attestation by TokenScript.

the class HelperTest method makeUnsignedx509Att.

/* the unsigned x509 attestation will have a subject of "CN=0x2042424242424564648" */
public static Attestation makeUnsignedx509Att(AsymmetricKeyParameter key) throws IOException {
    Attestation att = new Attestation();
    // =v3 since counting starts from 0
    att.setVersion(2);
    att.setSerialNumber(42);
    // ECDSA with SHA256 which is needed for a proper x509
    att.setSigningAlgorithm(SignedIdentifierAttestation.ECDSA_WITH_SHA256);
    att.setIssuer("CN=ALX");
    Date now = new Date();
    att.setNotValidBefore(now);
    att.setNotValidAfter(new Date(System.currentTimeMillis() + VALIDITY));
    att.setSubject("CN=0x2042424242424564648");
    SubjectPublicKeyInfo spki = SubjectPublicKeyInfoFactory.createSubjectPublicKeyInfo(key);
    att.setSubjectPublicKeyInfo(spki);
    ASN1EncodableVector extensions = new ASN1EncodableVector();
    extensions.add(Attestation.OID_OCTETSTRING);
    extensions.add(ASN1Boolean.TRUE);
    extensions.add(new DEROctetString("hello world".getBytes()));
    // Double Sequence is needed to be compatible with X509V3
    att.setExtensions(new DERSequence(new DERSequence(extensions)));
    assertTrue(att.isValidX509());
    return att;
}